Accession Number:

AD0419803

Title:

THEORETICAL AND EXPERIMENTAL INVESTIGATION OF MICROWAVE SCATTERING FROM A CYLINDRICAL PLASMA.

Descriptive Note:

Final rept.,

Corporate Author:

MICHIGAN UNIV ANN ARBOR

Report Date:

1963-09-01

Pagination or Media Count:

108.0

Abstract:

This investigation was concerned with the theoretical and experimental study of a modest temperature plasma obtained by seeding with low ionization potential elements. A detailed thermochemical analysis of nitrogen or air as the carrier gases and sodium, potassium, or cessium as the seeding elements was made. The results are presented for a range of seeding ratios and temperatures up to 4000 K. The experimental facility consisted of an RF plasma generator which produced a low velocity cylindrical plasma at 1 atmosphere pressure and a temperature of 2750 K. Seeding was accomplished by using an atomizer and aqueous solutions of the nitrates of the seeding elements. The phase and amplitude of 3 cm microwaves scattered from the finite length, cyoindrical, thermal plasma were measured by a microwave interferometer. These measurements were compared to the theoretical predicted values as obtained from an IBM 7090 computer program. A comprehensive discussion of the possible sources of error is included but consistent unexplained differences between experiment and theory remain. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE